22440024400 has 30 divisors (see below), whose sum is σ = 53912159582. Its totient is φ = 8976009600.

The previous prime is 22440024353. The next prime is 22440024403. The reversal of 22440024400 is 442004422.

It can be written as a sum of positive squares in 3 ways, for example, as 5583676176 + 16856348224 = 74724^2 + 129832^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22440024403) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 28049631 + ... + 28050430.

Almost surely, 2^22440024400 is an apocalyptic number.

22440024400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22440024400 is an abundant number, since it is smaller than the sum of its proper divisors (31472135182).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22440024400 is a wasteful number, since it uses less digits than its factorization.

22440024400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56100079 (or 56100068 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 22.

Adding to 22440024400 its reverse (442004422), we get a palindrome (22882028822).

The spelling of 22440024400 in words is "twenty-two billion, four hundred forty million, twenty-four thousand, four hundred".